Intake manifold sensor issue

[danielmcinerney]

***reposting this from the old scirocco forum

i have 2009 2L tsi 56000km/35000miles

engine management light came on recently so visited garage and found the following error:
Intake Manifold Flap Position Sensor Implausible Signal

other than an increase in fuel consumption on the computer there was no other problems i noticed. then car started to misfire after accelerating hard

garage said the misfire was due to a coil and not related. they changed sensor and coil and everything went back to normal. after 5 days engine management light came back on with same sensor warning, and fuel consumption was back up. now they are saying they need to take off intake manifold to check flaps

from searching around ive found nothing about this error on sciroccos, only on some other vw's and audis. could be the same engine im not sure. the result in most of these cases was an intake manifold replacement which isnt good as im out of warranty

anyone experienced anything similar? and could it be fixed without replacing the manifold?

[John Y]

It is the same engine as those in connection with which you have already read about the problem - 2.0T TSI (EA 888 motor.) Recently replaced the IM in a family member's car (Passat) after this happened. The servo motor that operates the flaps in the manifold runners is an integral part of the manifold, so no, it can't be - unless the problem is quite different, but I can't imagine that based on your description. The manifold is not really an expensive piece (ca. $200 in the US) but the labor is more extensive. You shouldn't have any issues given your low mileage, but make sure they check the condition of your intake valves too, in terms of carbon deposits or gunky buildup.

[danielmcinerney]

they removed the entire manifold and didnt find any noticable issue. some stiffness in the flaps but they thought this was normal. there was actually a lot of carbon buildup. they cleaned this but sensor warning came back on pretty much as soon the car was driven again...